The aim of the study is to evaluate the effect of barrier discharge treatment of corn seeds on their germination, plant growth and yield. Three groups of seeds were treated for 2, 4 and 6 minutes, followed by cooling for 48 and 72 hrs, respectively. The results showed significant increase in germination, plant height and number of cobs after seed treatment, especially in the treatment for 4 minutes followed by cooling for 72 hours. The highest increase in yield was recorded in the same group. The data obtained indicate the promising use of barrier discharge seed treatment to increase the productivity of corn crops.